4.9

M4.9 Earthquake near Kuril IslandsSeptember 10, 2021

2021-09-10 20:10:39 UTC (2021-09-10) · approx. 6:10 AM UTC+10 local

MagnitudeM4.9(mb)
Time20:10 UTC6:10 AM UTC+10
Depth10.0 kmshallow crustal
Coordinates45.535°, 151.974°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 10, 2021 at 20:10 UTC, a magnitude 4.9 shallow crustal earthquake struck near Kuril Islands, at a depth of 10.0 km and coordinates 45.5346°, 151.9744°.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 45.53°, 151.97°

Earthquake Details

Magnitude
4.9 mb
Depth
10.0 km
shallow crustal
Location
45.5346°N
151.9744°E

Technical Information

Event ID
us7000fa4v
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Azimuthal Gap
119.0°
Min Station Distance
6.546°
RMS Residual
0.85 sec
Last Updated
2021-11-23 15:09:22 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near Kuril Islands?

The magnitude 4.9 earthquake that struck near Kuril Islands on September 10, 2021 at 20:10 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 45.5346°, 151.9744°, which is near Kuril Islands.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000fa4v). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, September 10, 2021). M4.9 Earthquake near Kuril IslandsSeptember 10, 2021. Retrieved November 23, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000fa4v/